ASTROSAT CZTI

Data Quality Report

Orbit 35112

Creation date: 2022-03-28T17:25:11.092460
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T05_015T01_9000005026_35112cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35112cztM0_level2_quad_clean.evt
Size (bytes)568,005,12070,205,760
Size541.7 MB 67.0 MB
Events in quadrant A3,078,971438,662
Events in quadrant B2,931,565455,830
Events in quadrant C3,143,502443,853
Events in quadrant D7,675,477401,677

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125673
B0120862
C0125702
D0266552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55111282.322627%
B5511450.816549%
C55111041.887135%
D551169112.538559%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7155 5512 100 100 1.40% 1.81%
B 7155 5512 23 23 0.32% 0.42%
C 7155 5512 73 73 1.02% 1.32%
D 7155 5512 599 599 8.37% 10.87%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 169 478612 3648.97 646 634 131.0
A 10 83 84748 642.14 646 634 131.0
A 13 6 9557 68.12 646 634 131.0
B 5 172 190869 1531.13 646 628 124.2
B 4 232 57243 455.66 646 628 124.2
B 0 189 46525 369.39 646 628 124.2
C 0 10 326076 2247.34 625 629 144.8
C 15 214 232691 1602.48 625 629 144.8
C 0 207 82666 566.5 625 629 144.8
D 8 195 4364640 29147.54 609 591 149.7
D 13 249 335336 2235.77 609 591 149.7
D 7 80 234902 1564.97 609 591 149.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter